package cc.uncarbon.module.custom.service;

import cc.uncarbon.framework.core.constant.HelioConstant;
import cc.uncarbon.framework.core.exception.BusinessException;
import cc.uncarbon.framework.core.page.PageParam;
import cc.uncarbon.framework.core.page.PageResult;
import cc.uncarbon.module.custom.entity.OrdersItemEntity;
import cc.uncarbon.module.custom.mapper.OrdersItemMapper;
import cc.uncarbon.module.custom.model.request.AdminOrdersItemInsertOrUpdateDTO;
import cc.uncarbon.module.custom.model.request.AdminOrdersItemListDTO;
import cc.uncarbon.module.custom.model.response.OrdersItemBO;
import cn.hutool.core.bean.BeanUtil;
import cn.hutool.core.collection.CollUtil;
import cn.hutool.core.text.CharSequenceUtil;
import cn.hutool.core.util.ObjectUtil;
import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import lombok.RequiredArgsConstructor;
import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.List;


/**
 * 子订单
 */
@RequiredArgsConstructor
@Service
@Slf4j
public class OrdersItemService {

    private final OrdersItemMapper ordersItemMapper;


    /**
     * 后台管理-分页列表
     */
    public PageResult<OrdersItemBO> adminList(PageParam pageParam, AdminOrdersItemListDTO dto) {
        Page<OrdersItemEntity> entityPage = ordersItemMapper.selectPage(
                new Page<>(pageParam.getPageNum(), pageParam.getPageSize()),
                new QueryWrapper<OrdersItemEntity>()
                        .lambda()
                        // 订单id
                        .eq(ObjectUtil.isNotNull(dto.getOrderId()), OrdersItemEntity::getOrderId, dto.getOrderId())
                        // 项目id
                        .eq(ObjectUtil.isNotNull(dto.getItemId()), OrdersItemEntity::getItemId, dto.getItemId())
                        // 用户id
                        .eq(ObjectUtil.isNotNull(dto.getUserId()), OrdersItemEntity::getUserId, dto.getUserId())
                        // 技师id
                        .eq(ObjectUtil.isNotNull(dto.getStaffId()), OrdersItemEntity::getStaffId, dto.getStaffId())

                        // 状态（0禁用，1， 2待预约   3待服务  4待评价 5已完成
                        .eq(ObjectUtil.isNotNull(dto.getStatus()), OrdersItemEntity::getStatus, dto.getStatus())
                        // 店铺id
                        .eq(ObjectUtil.isNotNull(dto.getStoreId()), OrdersItemEntity::getStoreId, dto.getStoreId())
                        // 时间区间
                        .between(ObjectUtil.isNotNull(dto.getBeginAt()) && ObjectUtil.isNotNull(dto.getEndAt()), OrdersItemEntity::getCreatedAt, dto.getBeginAt(), dto.getEndAt())
                        // 排序
                        .orderByDesc(OrdersItemEntity::getCreatedAt)
        );

        return this.entityPage2BOPage(entityPage);
    }

    /**
     * 根据 ID 取详情
     *
     * @param id 主键ID
     * @return null or BO
     */
    public OrdersItemBO getOneById(Long id) {
        return this.getOneById(id, false);
    }

    /**
     * 根据 ID 取详情
     *
     * @param id 主键ID
     * @param throwIfInvalidId 是否在 ID 无效时抛出异常
     * @return null or BO
     */
    public OrdersItemBO getOneById(Long id, boolean throwIfInvalidId) throws BusinessException {
        OrdersItemEntity entity = ordersItemMapper.selectById(id);
        if (throwIfInvalidId && entity == null) {
            throw new BusinessException(400, "无效子订单ID");
        }

        return this.entity2BO(entity);
    }

    /**
     * 后台管理-新增
     */
    @Transactional(rollbackFor = Exception.class)
    public Long adminInsert(AdminOrdersItemInsertOrUpdateDTO dto) {
        log.info("[后台管理-子订单-新增] >> DTO={}", dto);
        this.checkExistence(dto);

        dto.setId(null);
        OrdersItemEntity entity = new OrdersItemEntity();
        BeanUtil.copyProperties(dto, entity);

        ordersItemMapper.insert(entity);

        return entity.getId();
    }

    /**
     * 后台管理-编辑
     */
    @Transactional(rollbackFor = Exception.class)
    public void adminUpdate(AdminOrdersItemInsertOrUpdateDTO dto) {
        log.info("[后台管理-子订单-编辑] >> DTO={}", dto);
        this.checkExistence(dto);

        OrdersItemEntity entity = new OrdersItemEntity();
        BeanUtil.copyProperties(dto, entity);

        ordersItemMapper.updateById(entity);
    }

    /**
     * 后台管理-删除
     */
    @Transactional(rollbackFor = Exception.class)
    public void adminDelete(Collection<Long> ids) {
        log.info("[后台管理-子订单-删除] >> ids={}", ids);
        ordersItemMapper.deleteBatchIds(ids);
    }


    /*
    ----------------------------------------------------------------
                        私有方法 private methods
    ----------------------------------------------------------------
     */

    /**
     * 实体转 BO
     *
     * @param entity 实体
     * @return BO
     */
    private OrdersItemBO entity2BO(OrdersItemEntity entity) {
        if (entity == null) {
            return null;
        }

        OrdersItemBO bo = new OrdersItemBO();
        BeanUtil.copyProperties(entity, bo);

        // 可以在此处为BO填充字段

        return bo;
    }

    /**
     * 实体 List 转 BO List
     *
     * @param entityList 实体 List
     * @return BO List
     */
    private List<OrdersItemBO> entityList2BOs(List<OrdersItemEntity> entityList) {
        if (CollUtil.isEmpty(entityList)) {
            return Collections.emptyList();
        }

        // 深拷贝
        List<OrdersItemBO> ret = new ArrayList<>(entityList.size());
        entityList.forEach(
            entity -> ret.add(this.entity2BO(entity))
        );

        return ret;
    }

    /**
     * 实体分页转 BO 分页
     *
     * @param entityPage 实体分页
     * @return BO 分页
     */
    private PageResult<OrdersItemBO> entityPage2BOPage(Page<OrdersItemEntity> entityPage) {
        return new PageResult<OrdersItemBO>()
            .setCurrent(entityPage.getCurrent())
            .setSize(entityPage.getSize())
            .setTotal(entityPage.getTotal())
            .setRecords(this.entityList2BOs(entityPage.getRecords()));
    }

    /**
     * 检查是否已存在同名数据
     *
     * @param dto DTO
     */
    private void checkExistence(AdminOrdersItemInsertOrUpdateDTO dto) {
        /*
        可以根据自己业务需要，解禁这段代码，修改判断条件和文案

        OrdersItemEntity existingEntity = ordersItemMapper.selectOne(
                new QueryWrapper<OrdersItemEntity>()
                        .lambda()
                        .select(OrdersItemEntity::getId)
                        .eq(OrdersItemEntity::getTitle, dto.getTitle())
                        .last(HelioConstant.CRUD.SQL_LIMIT_1)
        );

        if (existingEntity != null && !existingEntity.getId().equals(dto.getId())) {
            throw new BusinessException(400, "已存在相同子订单，请重新输入");
        }
        */
    }

}
